package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.GetMapping;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //使用MD5加密后比较密码
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    //新增员工
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //将DTO对象的属性值拷贝到实体对象中
        BeanUtils.copyProperties(employeeDTO, employee);//参数1：源对象，参数2：目标对象

        //设置账号状态为启用
        employee.setStatus(StatusConstant.ENABLE);

        //设置密码为默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置当前记录的创建时间和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //设置当前记录的创建人和修改人
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        //调用mapper的insert方法保存数据
        employeeMapper.insert(employee);

    }

    //分页查询员工
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        //返回值为什么Page<Employee>，因为Page是PageHelper提供的一个分页对象，里面封装了分页查询的结果
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        long total = page.getTotal();
        List<Employee> records = page.getResult();

        return new PageResult(total, records);

    }
    //启用禁用员工账号
    @Override
    public void stoporstart(Integer status, Long id) {

        //创建Employee对象代码复用虽然这里只传了两个参数，后续修改需求可能会传更多参数可以直接调用这个方法
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);

    }

    //根据id查询员工信息
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("******");
        return employee;
    }

    //修改员工信息
    @Override
    public void update(EmployeeDTO employeeDTO) {

        Employee employee = new Employee();
        //将DTO对象的属性值拷贝到实体对象中
        BeanUtils.copyProperties(employeeDTO, employee);
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }
}
